hallucinate

The episode then dives into A Christmas Carol territory as Oliver starts to hallucinate.

One night, while looking in the mirror he began to hallucinate that he could not see his flesh or his bones.

A placard that is to have effect at some distance must be in glaring colours; pathos calls for images that hallucinate.

I recognise no obligation to reason with such hallucinate mortals; I simply treat them with ridicule.